Display screen or portion thereof with icon



FIG. 1 is a front view of a display screen or portion thereof with icon, showing my new design; and,

FIG. 2 is a front view of the display screen or portion thereof with icon of FIG. 1, shown embodied in a mobile terminal, to illustrate an example environment.

The broken-line drawing of the mobile terminal, the numbers, symbols and other images illustrate environmental subject matter and form no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with icon, as shown and described. 